The twins have called for Eurovision parties all over Ireland but "only if people drink lots of water" -- to tie in with 'Waterline'. "The other Eurovision acts have fire and light but we're the only ones using water," John said.

Interacting with the audience will be another key weapon for Jedward in the final.

"We're not just doing a song," John said. "We will be talking and interacting with the audience in the Crystal Hall and the millions of people watching around the world. Jedward will be beaming good vibes."